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Mend Vaillant Pressure Drop Cold

Valiant combi pressure drop when cold?

is it normal for a combi boiler to lose slight pressure over the summer when the system is off. I have had leaks in the past with much more dramatic fall in pressure but i am obviously worried i have a new leak.

Wayne
June 2006

Vaillant Heating, Home Heating Systems Pressure Drop Cold

around 0.2 - 0.4 bar over a few months

wayne
July 2006

IT WILL LOSE SLIGHT PRESSURE OVER A FEW MONTHS.BUT WHAT ARE YOU CALLING SLIGHT PRESSURE.

HI-SPEC PLUMBING
June 2006

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Vaillant Combi Boiler Pressure Drop - Help!